British police arrested four men in the town of Luton on Wednesday on suspicion of being involved in the commission, preparation and instigation of acts of terrorism, the police said in a statement.

The men, all in their 30s, were taken into custody at a London police station. Searches were being conducted at seven addresses in Luton, 50 km north of London, and several vehicles were also being sear-ched, the police said. All of them have been arrested under the Terrorism Act.

The arrests and searches were part of an ongoing investigation of individuals in the Luton area and were not connected to the November 13 ISIS attacks in Paris, the statement said.

The government has said seven plots to attack targets in Britain, directed or inspired by ISIS, have been thwarted by security services in the past year.

Under British Terrorism Act, one can be arrested for encouragement of terrorism, disseminating terrorist publications, training for terrorism, attendance at a place used for terrorist training, making and possession of devices or materials, misuse of devices or material and misuse and damage of facilities.